Baking



(No Model.) 2 Sheets-Sheet 1.

O. K. HARRY. BAKING, COOKING, AND HEATING FURNACE.

No. 594,993. Patented De0.'7,1897.

,04 544A i z/XW a9 2 Sheets-Sheet 2;

(No Model.)

0. K. HARRY. BAKING, COOKING, AND HEATING FURNACE. No 594,993.

Patented De0.7, 1897.

UNiTnn STATES OYVEN K. HARRY, OF DALLAS, TEXAS.

BAKING, COOKING, AND HEATiNG FURNACE.

SPECIFICATION forming part of Letters Patent No. 594,993, dated December7, 1897. Application filed August 21, 1896. Serial No. 603,500. (Nomodel.)

To all whom it may concern:

Be it known that I, OWEN K. HARRY, a citizen of the United States,residing at Dallas, in the county of Dallas and State of Texas, haveinvented a new and useful Improvement in Baking, Cooking, and HeatingFurnaces, of which the following is a specification.

The object of my invention is to provide a light and inexpensive baking,cooking, and heating furnace to be used for general household work, suchas heating flat-irons, broilin g meat, baking bread, the.

My invention consists in the mechanism and peculiar arrangements ofparts, as illustrated in the accompanying drawings and particularlypointed out in the claims.

Figure 1 is a front elevation of the device complete. Fig. 2 is avertical section through Fig. 1. Fig. 3 is a section through the lowerpart of the furnace from A to A, Fig. 1, showing in a plan view theconstruction of the sliding door of the aslrchamber. Fig. showsa sectionthrough the vertical wall of the furnace, the sliding door, and Wires ofsame from B to B, Fig. 1.- Fig. 5 is a section in a plan view throughthe bakingoven from O to 0, showing the lower end a of the draft-pipeextending down to and opening into the baking-apartment. Fig. 6 is aplan view of the bottom of the baking-oven.

Similar numerals of reference refer to similar parts throughout theseveral views.

The numeral 1 is the side walls of a bakingoven having the top 2 andbottom 3, provided with two wing-shaped flanges 4: at, which are outpartly loose from the bottom, with their ends 5 5 turned outwardly,leaving two orifices 6 6 through the bottom. Extending through the ovenfrom the front wall to the rear wall, Fig. 5, is a baking-apartment Z,the front and rear ends being rigidly secured to the said walls. Thebaking-apartment is provided with side walls 8, top 9, (which covers thebaking-apartment from dotted lines 9 to the rear wall 1, leaving a smallspace in front between the dotted line 9 and the front wall of thebaking-apartment uncovered,) bottom 10, false bottom 11, and cold-airchamber 12, provided with air-holes 12 and a door 12*, opening into thebaking-apartment.

It will be observed from the sectional draw ing, Fig. 2, that in theposition occupied by the baking-apartment in the baking-oven the hot-airchambers 13 are formed. To the bottom 3 of the baking-oven is rigidlysecured a circular flange 14, which will be hereinafter fully explained.

Below the baking-oven is a detachable furnace 15, having the corrugatedside walls 16, curved rim 17, and curved base 18, concave grate 19,(with apertures 20 through it,) and curved flanged edges 21, which fitsnugly within one of the corrugations of the side walls. Below the grateis an ash-chamber 22, having a bottom 23 with curved flanged edges 2 L,which also fit neatly in one of the corrugations of the side walls. Theash-chamber is pro vided with a sliding door 25, (its peculiarconstruction being shown in Figs. 3 and 4,) in which 16 are thecorrugated side walls of the furnace.

26 are two wires or bands encircling the outer surface of the walls ofthe furnace in such a manner that a corrugated sliding door is engagedin between the corrugated walls andthe wires or bands.

The wall of the furnace is constructed of metal. The sheet of metal iscorrugated and formed into a cylinder of the proper size. The bottom iscut out of metal in the form of a disk, and a flange is formed on therim or edge. It is then put in the cylinder and lodged in one of thecorrugations at the desired lo cation. Pressure is then applied to thecylinder. This closes the cylinder on the flange of the disk, and enoughpressure is applied to the cylinder to crimp the flange securely intothe corrugation. the cylinder are then riveted together.

As to the operation of my device a door could be had through the sidewalls of the furnace at a point just above the ash-door leading into thefire-box, through which a fire could be made on the grate. In thearrangement shown in the drawings it, will necessi tate the baking-ovenbeing detached from the furnace, so that a fire can be kindled in thefire-box, which when done the oven is placed on the furnace, the flange14; extending downwardly into the fire-box 27 in such a manner that thedraft-holes 28 in the upper end of the furnace are cut off. The heatarising from the fire-box is deflected by the wing-shaped flanges of thebottom of the baking-oven,

The two ends forming taking two distinct courses through the hotairchambers 13, thence through the space 13 into the baking-apartment,thence out through the draft-pipe 29, (the course taken by the heatbeing outlined by arrows numbered from 1 to 4:, as shown in Fig. 2.) Insuch an arrangement of the draft the heat is applied with the samedensity to the two sides of the baking-apartment and the interior of thebaking-apartment. would otherwise be subjected to the greatest heat, isprovided with a cold-air chamber, supplied with cold air from theoutside, (through the perforations in the end walls,) which prevent thebottom of the bakingapartment from becoming too hot. The heat generallypassing through the oven will be controlled by the damper 29 in thedraft-pipe 29 and door of ash-chamber.

To prevent the bottom of the ash-box from becoming too hot, the holes 30are cut through the walls of the lower end of thefurnace for theadmission of cold air. The draft is created in the fire-box by thepassing of the air from the outside through the door leading to theash-chamber, thence through the perforations of the grate to the fire inthe fire-box.

It is also my purpose to use the furnace for other purposes, such asheating water, broiling meat, heating fiat-irons, &c. The door leadinginto the ash-chamber is sufficient in height 'and width to admit ofbroiling and baking in the ash-chamber, if desired.

I am aware that a number of furnaces and baking-ovens are now in use,and I shall point out some of the advantages I have in my de vice overall others.

Vith reference to the arrangement of the hot-air chambers in thebaking-oven and the manner the heat or hot air is applied to the wallsand the interior of the baking-apartment, incombination with the effectof the cold-air chamber below the bakingapartment, special attention isdirected.

The side walls 16 of my furnace are made of steel metal, and by reasonof this material The bottom, which being corrugated I get the greateststrength from so thin and light material.

' and contraction by heat is overcome.

I-Iaving explained all that is necessary for a clear understanding ofthose skilled in the art to which it appertains, what I claim, anddesire to secure by Letters Patent of the United States, is

1. In a baking, cooking and heating furnace combined, having abaking-oven with side walls 1, top 2, bottom 3, with wing-shaped flanges4, 4, provided with a baking-apartment 7, having side walls 8, cover 9,bottom 10,, false bottom 11, cold-air chamber 12, airholes 12, hot-airchambers 13, and a draftpipe 29 with a damper 29, all for a purpose assubstantially set forth.

2. In a baking, cooking and heating furnace combined, having a furnace,with corrugated side walls 16, with curved rim 17, curved base 18,concave fire-grate 19, having holes 20, and curved flanged edges 21,supported by one of the corrugations of the side walls 16, ashchamber23, with curved flanged edges 24, supported by corrugated walls 16,

I with a sliding, door 25, which is engaged in between the corrugatedside walls 16, and two wires or bands 26, which encircle the outersurface of corrugated walls 26, fire-box 27, and draft-holes at the topof furnace 28 and vent-holes 30, all for a purpose as substan-. tiallyset forth.

OIVEN K. HARRY.

WVitnesses:

JOHN FISHER, H. H. HAWLEY.

